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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1650 [0], given: 396

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Compare [#permalink] New post 29 Apr 2018, 00:47
Expert's post
00:00

Question Stats:

100% (00:34) correct 0% (00:00) wrong based on 10 sessions
Quantity A
Quantity B
\(2^2 (420)\)
\(2^5 (105)\)


A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Sandy
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Intern
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Joined: 29 Apr 2018
Posts: 7
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Kudos [?]: 3 [2] , given: 0

Re: Compare [#permalink] New post 30 Apr 2018, 05:16
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KUDOS
Prime factorization of Quantity A yields 2^4*3*5*7 and of quantity B yields 2^5*3*5*7. So, clearly, quantity B is greater.
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1650 [0], given: 396

CAT Tests
Re: Compare [#permalink] New post 13 May 2018, 15:40
Expert's post
Explanation

Compare the quantities, looking for ways that the numbers in one quantity can be rewritten using the numbers from the other quantity. In Quantity A, rewrite 420 as 4 × 105.

The 105 values cancel out, and the remaining multiples of 2 also cancel except for one 2 left in Quantity B. Choice (B) is correct.
_________________

Sandy
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Re: Compare   [#permalink] 13 May 2018, 15:40
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